Melec C-875, Instruction Manual

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5-15.Interrupt Request Function
(1) After the termination of a command, an interrupt request (RDYINT signal) can be generated for the
initiator. RDYINT signal is generated too at the stop(the termination of a command) for FSSTOP,
STOP, and LIMIT, etc.
There are 3 interrupt request generation patterns as shown below.
One of them is selected by the SPEC INITIALIZE1 command. Item 1 is selected at POWER ON/RESET.
1． Output only when a command accompanied by pulse output is terminated.
2． Output when every command is terminated(except special commands).
3． No output in any case.
Note: This function is not effective when the COUNTER command is executed or when special commands are
executed. For details of special commands, Refer to the description of 6-2
(2) Interrupt request (CNTINT signal) may occur in response to any given count value of the PULSE COUNTER.
Interrupt request (DFLINT signal) may occur in response to the value above or below any given count value
of the DEFERENTIAL COUNTER. For details, refer to the description of PULSE/DEFERENTIAL COUNT COMPARE
function in DETAILS OF COUNTER FUNCTION in Chapter 8.
5-16.Speed Data Hz Unit Setting Function
Speed data (HSPD, LSPD, CSPD, SHSPD, SLSPD, and HSPD1 to 10 when an applied function is used) can be
set as 3-byte data in Hz.
The data setting range is 1 to 3,333,333 so the speed can be set in the range of 1Hz to 3.3MHz.
＊Speed setting example
When 10000 (002710 ) has been set in the HSPD:
Ｈ
HSPD＝10000Hz
However, the MCC05v2 output frequency is controlled by counting the reference clocks (40MHz).
For this reason, a frequency that cannot be physically output may appear for the set value of speed data.
Consequently, there will be a difference,specially in a high speed area, between the set value and the real
output frequency.
Supposing that the set value of speed data is F', the real output frequency F is represented by the
following expression.
160,000,000
F＝ (Hz)
Integer part of 〔160,000,000/F'〕
In the above expression, the part following the decimal point of the wavy-underlined number will be ignored,
so that the real output frequency becomes a little higher than the set value.
Take this point into consideration when accuracy is required between the set value and the real output.